Peter gestured Gwen to get rid of her clothes, a rather callous action that might have created an argument between them, if Gwen hadn't been equally excited by the treatment Liz was receiving. She was quick to get rid of her outer layer, revealing her crimson underwear, a sharp choice that contrasted amazingly with her pale skin and blonde hair. Moreover, its rather unsubstantial cut left quite a bit of her skin free to be admired. She blushed, slightly uncomfortable with her aggressive choice even under the circumstances.
"Beautiful," he murmured, helping her to feel confident, not that it was a struggle for him to say that. With her innocent beauty and perfect fitness, she was a masterpiece that any man would be lucky to have. Then, he spanked Liz once more, highlighting the rather unbelievable state of his luck.
Encouraged by his words, Gwen took a step closer, next to Liz once more. She looked at him questioningly, he nodded, and her hand exploded on Liz's bottom, filling the room with another sharp crack, one that was markedly different from the earlier ones.
"That's too much-" Liz said, trying to argue, but Peter cut it short with another spank of his own, this time actually stiff enough to make pain overwhelm her pleasure, reminding her that there was no place for disobedience. He received an annoyed glare in reply, but it was short-lived against his warning glare, promising more if she insisted to continue with this approach.
The next move Liz did was a nod of obedience, giving Gwen the opportunity to spank her bottom once more. Peter decided to reward Liz, and when her hand landed on her bottom once more, he grabbed the edge of her underwear, and pulled it sharply. The fragile fabric had no chance to resist his supernaturally enhanced strength, leaving her bottom bare.
He slipped his fingers inside, but his eyes were locked with Gwen, happy to find mostly excitement there. Gwen continued slapping her bottom, rather stiff as well, while he started exploring her tunnel. Liz's cries got louder and louder, with pleasure taking an ever-increasing share of it.
It didn't take a genius to see Gwen was starting to feel neglected, so he gestured her to lean closer, which she did rather enthusiastically. He pulled her bra down, revealing her perfectly shaped breasts, before leaning forward and capturing her nipple between his lips, biting and licking in an alternating manner, and soon, Gwen's cries melded into Liz's, creating a rather arousing symphony, one that brought his erection to painful levels.
Luckily, there was no reason for him to suffer it helplessly. "It's time for the real event," he said as he stopped playing with Gwen's nipple, and gestured her to take a step back.
Before Liz could question what he had meant, he pushed her on the floor, his arms already around her waist to prevent a painful collision. Liz found herself on all fours, her naked bottom raised invitingly. He lost no time before taking a position behind her, pushing inside without warning, pushing his full length, which extracted a satisfied moan, no less loud than her earlier pained cries.
"It doesn't seem like a punishment," Gwen murmured jealously, not liking the sudden change. Her arms were crossed underneath her breasts in a disapproving manner, but considering her nakedness, it had the opposite impact. Still glistening with his earlier kisses, framed by her fragile yet beautiful arms, it was a beautiful sight.
Don't worry," Peter answered even as he slammed inside her rapidly, not bothering to wait for her to adapt to his presence, though that wasn't exactly a punishment, as shown by Liz's repeated moans, not strained by pain. His fingers worked wonders to loosen her. "The punishment is about to come."

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Spider-man Unleashed
FanfictionAfter Taking too much trash from others peter decided to Change